From nobody Fri Dec 19 22:02:50 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE88C4D133; Sun, 24 Mar 2024 23:03:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321408; cv=none; b=mwEq6zctVTnsJ2JvUcRAvUgVgYlp6R0T8N8454l/9dDZtdllxxa9YJRM5nbHlE6EJ/BOqhN+i4QrXrtgzTBAK8ofdNsZeOPuS6qVLpYlPJqFBOoN2YevXF4H8tNeBQR/t9O3q2LTP9Nk7Zp2kKTak1bin+lg6dURrl59PwwwaLU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321408; c=relaxed/simple; bh=RiNJz9zlSFXEx8zYJSB1a4ND7aEOOQrZQdR/XEnpxN4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YiL4D2K0MU9r1L/YUWkynLncQDVglOKh2HRTBxijNCYYYVPSq8eOhh5LoZHFA2AQgejqH0X1bc57NhT6rzioJMCmjVEbJFB3gAlkajV/uo2gTF/KeA/lup2gkCP4c/Cs6K0PjFa5I4hbb3Hc43elNCxPP9RArISVBuSOflTIsUY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NR/M3K02; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NR/M3K02" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1467C433A6; Sun, 24 Mar 2024 23:03:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711321407; bh=RiNJz9zlSFXEx8zYJSB1a4ND7aEOOQrZQdR/XEnpxN4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NR/M3K022ROrNduZk6O1o2BSTvFVMp7IfX6iqH0tQMpzxgB7AmaC/BCSUpAV6m9GC p6UmugQHv/8HA3h353k71Kl+XgXU1fbYIYRwj2XyTvb5RmPOtrXD1QVeTSj5Ly7hp8 nBgr7rTNYMHOUR+ftUboG0E02/3hXX15PCjlYqhRfJnX7DehmwjQRtYQZs0hF/v0SC rbUnw2+Z6jGQe14pv4uaeTBSynacO1Xl2634+FeqrJKnBhQ1CcO82+LnEnyXvtdffZ NtRrFkVRtpfIdIINBjhr/uieSY4vyKMEfTczbiUNRZvBbzJKs7DasrjzVpMPgvHiNC H9Iqr5Comt0gw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anastasia Belova , Viresh Kumar , Sasha Levin Subject: [PATCH 6.6 132/638] cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value Date: Sun, 24 Mar 2024 18:52:49 -0400 Message-ID: <20240324230116.1348576-133-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324230116.1348576-1-sashal@kernel.org> References: <20240324230116.1348576-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Anastasia Belova [ Upstream commit f661017e6d326ee187db24194cabb013d81bc2a6 ] cpufreq_cpu_get may return NULL. To avoid NULL-dereference check it and return 0 in case of error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: de322e085995 ("cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for = Broadcom STB SoCs") Signed-off-by: Anastasia Belova Signed-off-by: Viresh Kumar Signed-off-by: Sasha Levin --- drivers/cpufreq/brcmstb-avs-cpufreq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmst= b-avs-cpufreq.c index 35fb3a559ea97..1a1857b0a6f48 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -481,6 +481,8 @@ static bool brcm_avs_is_firmware_loaded(struct private_= data *priv) static unsigned int brcm_avs_cpufreq_get(unsigned int cpu) { struct cpufreq_policy *policy =3D cpufreq_cpu_get(cpu); + if (!policy) + return 0; struct private_data *priv =3D policy->driver_data; =20 cpufreq_cpu_put(policy); --=20 2.43.0